FIELD: technology for encoding multi-channel signals, in particular, encoding of polyphonic sound signals, such as stereophonic signals.
SUBSTANCE: method is described for encoding multi-channel signal, such as stereophonic sound signal, including at least one first signal component (L) and second signal component (R). Method contains stages of transformation of at least first and second signal components by means of predetermined transformation to main signal (y), including larger part of signal energy, and at least one remainder signal (r), including less energy compared to main signal, where aforementioned predetermined transformation is parameterized by at least one transformation parameter; and representation of multi-channel signal at least by means of main signal and transformation parameter. Described additionally are device for encoding multi-channel signals and corresponding method and device for decoding such a signal.
EFFECT: encoding of stereophonic signal with efficient bit flow for given quality of sound.
7 cl, 15 dwg
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